<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Flex布局实战篇</title>
    <style>
      body {
        display: flex;
        align-items: center;
        justify-content: center;
      }

      [class$="face"] {
        margin: 16px;
        padding: 4px;
        background-color: #e7e7e7;
        width: 104px;
        height: 104px;
        object-fit: contain;

        box-shadow: inset 0 5px white, inset 0 -5px #bbb, inset 5px 0 #d7d7d7,
          inset -5px 0 #d7d7d7;

        border-radius: 10%;
      }

      .pip {
        display: block;
        width: 24px;
        height: 24px;
        border-radius: 50%;
        margin: 4px;

        background-color: #333;
        box-shadow: inset 0 3px #111, inset 0 -3px #555;
      }

      .first-face {
        display: flex;
        flex-wrap: wrap;
        align-content: space-between;
      }
      .column {
        flex-basis: 100%;
        display: flex;
        justify-content: space-between;
      }
    </style>
  </head>
  <body>
    <div class="first-face">
      <div class="column">
        <span class="pip"></span>
        <span class="pip"></span>
      </div>
      <div class="column">
        <span class="pip"></span>
        <span class="pip"></span>
      </div>
    </div>
  </body>
</html>
